Don Mills is one of Toronto's most distinctive planned communities — a 1950s and 60s landscape of mid-century modern bungalows, generous ravine lots, and quiet residential streets. Kopman Build specialises in renovating these homes with care for their architectural character, navigating the ravine setbacks, TRCA requirements, and aging systems that come with building in this neighbourhood.
Don Mills presents renovation challenges that most contractors are simply not prepared for. Mid-century modern bungalows — with their flat or low-pitched roofs, open floor plans, and natural material palettes — reward contractors who understand the architectural logic of the era. Older construction also brings knob-and-tube wiring, undersized mechanical systems, and materials that need careful remediation before structural work can begin.
Dustin Kopman founded Kopman Build in 1999 after growing up working in construction through his family's firm, G& G Enterprise. That hands-on background means every Don Mills project is managed by someone who understands the craft — not just the sales pitch.
Full kitchen remodels from layout changes to custom cabinetry, countertops, and appliance packages — designed to complement mid-century open floor plans.
Primary suites, main baths, ensuites, and powder rooms — complete gut-and-rebuild or targeted upgrades in bungalow and split-level homes.
Legal secondary suites, family rooms, home offices, and full basement renovations to Ontario Building Code in Don Mills's post-war stock.
Rear additions, second-storey additions, and side extensions — designed to integrate with mid-century modern character and meet TRCA requirements where applicable.
Multi-phase, whole-house renovations managed as one coordinated project — one team, one schedule, one point of contact throughout.
Specialised restoration and modernisation of Don Mills's 1950s–60s homes, preserving defining architectural features while upgrading systems and finishes.
We visit your property, listen to your goals, and document the project in writing — scope, budget, and timeline.
A detailed line-item estimate with allowances and contingencies, so you know the number before committing.
We manage all permit applications, engineering consultants, and approvals — nothing falls through the cracks.
Full-time site supervision, weekly updates, and open-book cost tracking throughout the project.
Structured handover with all documentation, warranties, and a 12-month attendance window post-completion.
Kitchen renovations in Don Mills typically run $65,000–$160,000+, reflecting quality expectations and the added complexity of working within 1950s–60s construction. Bathroom renovations range $28,000–$80,000. A full bungalow renovation or rear addition can run $200,000–$600,000+. We provide detailed pre-construction estimates before any commitment.
Yes. Don Mills falls within the City of Toronto's jurisdiction, so all structural work, additions, and basement conversions require building permits. Projects near or within the Don River ravine system also typically require review and approval from the TRCA (Toronto and Region Conservation Authority) before City permits are issued. Kopman Build manages both processes end to end.
Mid-century modern renovation and additions are a core strength of ours. Don Mills bungalows have distinctive architectural traits — clean horizontal lines, open floor plans, natural material palettes, and clerestory windows. We work to preserve and extend that character rather than override it, whether we're updating a kitchen, adding a second storey, or opening up a rear addition to the garden.
Properties that abut or fall within the Don River ravine system are subject to TRCA regulations, including development setbacks, grading restrictions, tree protection requirements, and slope stability assessments. Before designing any addition or site work, we conduct a thorough site assessment and engage the TRCA early in the process. Ignoring these requirements can result in stop-work orders and costly remediation.
A kitchen renovation in a Don Mills bungalow typically takes 10–16 weeks, accounting for permit lead times and the careful work required in older structures. A rear addition on a ravine property, where TRCA review is required, can take 16–24 weeks or more from design to occupancy. Whole-home renovations run 8–18 months. We build honest schedules and communicate any changes in real time.
Tell us about your project. Initial consultations are confidential and no-obligation. We serve Don Mills, all of North York, and the broader Toronto and GTA area.
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